One of the best outcomes of 20 years of continuous space habitation, according to Shepherd, is astronaut diversity. While men still lead the pack, more crews include women. | Two U.S. women have served as space station skipper. Commanders typically are American or Russian, but have also come from Belgium, Germany, Italy, Canada and Japan. While US astronaut Kate Rubins cast her ballot from the International Space Station on October 22, making her voice heard in the presidential election despite being 253 miles (408 kilometers) above the Earth.
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